//#include "stm32f4xx_hal.h"
//#include "i2c.h"
//#include "gw_grayscale_sensor.h"
//unsigned char Ping(void);
//unsigned char IIC_Get_Digtal(void);
//unsigned char IIC_Get_Anolog(unsigned char * Result,unsigned char len);
//unsigned char IIC_Get_Single_Anolog(unsigned char Channel);
//unsigned char IIC_Anolog_Normalize(uint8_t Normalize_channel);
//unsigned short IIC_Get_Offset(void );

